//Ta Duc Viet - 11020397
//5/3/12
//Kiem tra ki tu
#include <iostream>
using namespace std;
int main()
{
    char KiTu;
    cin >> KiTu;
    if ( KiTu <= 'z' && KiTu >= 'a')
    {
       cout << "The upper case character corresponding to " << KiTu << " is "  << char(toupper(KiTu));
    }
    else
    {
       if ( KiTu <= 'Z' && KiTu >= 'A')   
       {
          cout << "The lower case character corresponding to " << KiTu << " is " << char(tolower(KiTu));
       }
       else cout << KiTu << " is not a letter";
    }
    cout << endl;
    system("pause");
    return 0;
}
       
    
